US3857905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered coating composition of unsaturated aycidyl polymer containing a sulfur terminating group, dicarboxylic acid, polester and polyacrylate
Assignee: 3M Co
•
Filing: 1973-02-02
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Granted: 1974-12-31
•
Expires: 1993-02-02
Abstract
Abstract Thermosettable coating powders comprising solid, low molecular weight, storable epoxy-functional acrylic terpolymers of glycidyl methacrylate, a lower alkyl acrylate and methyl methacrylate together with crosslinking agents, plasticizers and surfactants therefor.
Inventors
- 👤 W Blackley
- 👤 R Castle
- 👤 L Berntson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L33/10; C08L33/12; C08L67/00; C08L67/02; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; Y; Y10; Y10S; Y10S524/00; Y10S524/904; Y10S525/00; Y10S525/913
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
A THERMOSETTING COATING POWDER COMPRISING 1. 100 PARTS OF A SOLID, LOW MOLECULAR WEIGHT, SUBSTANTIALLY LINEAR, STORABLE EPOXY-FUNCTIONAL ACRYLIC TERPOLYMER OF 5-20 PARTS OF GLYCIDYL METHACRYLATE UNITS, 5-35 PARTS OF LOWER ALKYL ACRYLATE UNITS IN WHICH THE ALKYL GROUP CONTAINS FROM TWO TO FOUR CARBON ATOMS, 50-70 PARTS OF METHYL METHACRYLATE UNITS, AND 0.5-10 PART OF CHAIN TERMINATING GROUPS SELECTED FROM
Claim 2
Dependent Claim
61 words
A THERMOSETTING COATING POWDER COMPRISING 1. 100 PARTS OF A SOLID, LOW MOLECULAR WEIGHT, SUBSTANTIALLY LINEAR, STORABLE EPOXY-FUNCTIONAL ACRYLIC TERPOLYMER OF 5-20 PARTS OF GLYCIDYL METHACRYLATE UNITS, 5-35 PARTS OF LOWER ALKYL ACRYLATE UNITS IN WHICH THE ALKYL GROUP CONTAINS FROM TWO TO FOUR CARBON ATOMS, 50-70 PARTS OF METHYL METHACRYLATE UNITS, AND 0.5-10 PART OF CHAIN TERMINATING GROUPS SELECTED FROM
Claim 3
Dependent Claim
33 words
5-20 parts of a crosslinking agent selected from saturated aliphatic dicarboxylic acids having from 5 to 20 carbon atoms which is essentially unreactive at room temperature but which reacts rapidly above 150* C.
Claim 4
Dependent Claim
33 words
5-20 parts of a crosslinking agent selected from saturated aliphatic dicarboxylic acids having from 5 to 20 carbon atoms which is essentially unreactive at room temperature but which reacts rapidly above 150* C.
Claim 5
Dependent Claim
16 words
A thermosetting coating powder according to claim 1 wherein the lower alkyl acrylate is ethyl acrylate.
Claim 6
Dependent Claim
11 words
7-8 parts of an aliphatic dicarboxylic acid containing 9-10 carbon atoms,
Claim 7
Dependent Claim
11 words
7-8 parts of an aliphatic dicarboxylic acid containing 9-10 carbon atoms,
Claim 8
Dependent Claim
14 words
8-12 parts of butanediol adipate having an equivalent weight per carboxyl group of 500-1,000,and
Claim 9
Dependent Claim
14 words
8-12 parts of butanediol adipate having an equivalent weight per carboxyl group of 500-1,000,and
Claim 10
Dependent Claim
31 words
A thermosetting coating powder according to claim 1 wherein the terpolymer contains 10-15 parts of glycidyl methacrylate, 20-25 parts of lower alkyl acrylate units and 60-65 parts of methyl methacrylate units.
Claim 11
Dependent Claim
21 words
5-40 parts of an acid-terminated linear polyester plasticizer-curative having an equivalent weight per carboxyl group of from 100 to 1,500 and
Claim 12
Dependent Claim
21 words
5-40 parts of an acid-terminated linear polyester plasticizer-curative having an equivalent weight per carboxyl group of from 100 to 1,500 and
Claim 13
Dependent Claim
32 words
0.1 to 5 parts of a non-ionic aliphatic polyacrylate surface active agent, provided that the ratio of total carboxyl equivalence of (2) plus (3) is 0.5-1.5:1 of the epoxy equivalence of (1).
Claim 14
Dependent Claim
32 words
0.1 to 5 parts of a non-ionic aliphatic polyacrylate surface active agent, provided that the ratio of total carboxyl equivalence of (2) plus (3) is 0.5-1.5:1 of the epoxy equivalence of (1).
Claim 15
Dependent Claim
5 words
A thermosetting coating powder comprising
Claim 16
Dependent Claim
5 words
A thermosetting coating powder comprising
Claim 17
Dependent Claim
7 words
1-2 parts of poly 2-ethyl hexyl acrylate.
Claim 18
Dependent Claim
7 words
1-2 parts of poly 2-ethyl hexyl acrylate.
References Cited (Backward Citations)
US2935488A
Cited
GB1312098A
Cited
DE2214650A1
Cited
US3730930A
Cited
US3752870A
Cited
US3758634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |